Apologies for the 1 hour's worth of downtime today (Nov 19th, 5-6PM EST / 10-11PM GMT).
Unexpected behavior was encountered during the course of some maintenance.

We are sorry if anybody lost their post during the 1 hour downtime.
If you had started writing a post before the downtime started and tried to post it during the downtime, you probably noticed an error. You might need to write it again.

We apologize for the hassle. Something as innocent as a little regular maintenance ended up in a catastrophic system failure, so to speak. All is well now though.